Quantum Opto Compressor/Sustainer

The Vahlbruch Quantum Opto Compressor/Sustainer is a 100% analog pedal designed for studio-level compression and sustain. Its core features a photocell that generates musical optical compression, allowing the guitar to cut through the mix without losing transparency. The pedal offers switchable parallel compression, preserving attack and punchiness while adding sustain without tone coloration. Additionally, it includes a toggle switch for selecting classic serial compression mode.

The pedal is equipped with unique "MagTraB" switching technology, featuring a magnet integrated into the button, allowing for smooth and silent switching without mechanical clicks. It also offers the option to power up in either "on" or "bypass" state, providing flexibility for user preference.

Key specifications include:
- Optical compression using a photocell
- Toggle switch for selecting "Parallel" or classic "Serial" compression mode
- LED indicator for dynamic processing
- Internal switch for "true bypass" or "buffered bypass"
- Input impedance: 1M Ohms
- Output impedance: 100 Ohms
- Current consumption: 40mA
- Requires an external regulated 9V power supply (not included)
- Dimensions: 115mm x 70mm x 48mm
- Weight: 240g
- Handmade in Germany

The pedal is also suitable for bass and acoustic guitar, making it a versatile option for various musical applications.